I have a click event on an element that changes it's class from "fave" to "faved", I am then trying to fire a new clicked event if the element is clicked when it's class is faved, but it is not firing, here is my javascript.

$("#jobwall .fave").click(function(){
    var self =  $(this);
    $.ajax({
        url: "/favourites/save_employer", 
        type: "POST",
        data: "employer_id="+self.attr('href'),
        success:function() {
   开发者_StackOverflow中文版         self.removeClass('fave');
            self.addClass('faved');
        }
    });
    return false;
});

$(".faved").live("click", function(){
    alert("!!");
    return false;
});

You may include the .click() event to the new object, and not to use .live(). Like this:

$("#jobwall .fave").click(function(){
    var self =  $(this);
    $.ajax({
        url: "/favourites/save_employer", 
        type: "POST",
        data: "employer_id="+self.attr('href'),
        success:function() {
            self.removeClass('fave');
            self.addClass('faved');
            self.click(function(){alert("!!"); return false;});
        }
    });
    return false;
});

The .live() method is for adding elements, not changing. Remember this.

More information about .live() here.

Good luck :D

Update

As of jQuery 1.7, the .live() method is deprecated. Use .on() to attach event handlers.

From the messing around I did it looks as if those return false; statements are getting in your way. You should really consider using event.preventDefault();... as such:

$("#jobwall .fave").click(function(event){
    event.preventDefault();

Check out this jsFiddle for an example as to what I mean